Built lighting/bloom/HDR is brighter than in the editor

For some reason the built version (Windows) is brighter than the editor version. This is very visible due to the bloom effect which becomes overexaggerated in the built version (see screenshot).

The only scripts that are attached to the camera are:

• Cinematic Bloom (by Unity), with a threshold higher than 1.0.

• Cinematic Tonemapping (by Unity), photographic setting with an exposure of 1.7.

I also tried the following things:

• I tried all different bloom scripts that Unity offer, and same problem with them all.

• I tried all kinds of different settings, including both deferred and forward rendering.

• I wrote my own HDR shaders. Same problem.

• Tried turning off tonemapping. Same problem.

• Tried creating a new scene with different lighting, materials, etc. Same problem.

• There is no baked lighting, no directional lighting or ambient lighting in the scene.

• Tried different computers with different GPUs and different driver versions. Same problem.

Anyone have any thoughts what I could try/test next?

To me it looks as if the HDR values/bloom do something different in the built version than in the editor version, almost as if Unity are swapping shaders (or shader settings) dependent on if the game is built or not.